Passers-by saw John Nolan, 70, ablaze in a street in Haringey in the middle of the day and attempted to put out the flames before calling police and fire crews. The former construction worker, who was originally from County Mayo in Ireland, was taken to a specialist hospital but died later. Today detectives said his death was being treated as unexplained. There were no accelerants found on his body and specialist fire investigators could find no obvious reason for Mr Nolan to catch alight.